Thomas eyan



(No Model.)

INVENTOR- WITNESSE I ATTORNEYS N4 PETERS, PHOTO UT 0:; WASHINGT UNITEDSTATES PATENT OFFICE.

THOMAS RYAN, OF LOOKPORT, NEW YORK, ASSIGNOR OF ONE-HALF OF HIS RIGHT TOWILLIAM RICHMOND, OF SAME PLACE.

VSMUT-MILL.

SPECIFICATION forming part of Letters Patent No. 230,343, dated July 20,1880.

V Application filed May 6, 1880. (No model.)

To all whom it may concern:

Be it known that I, THOMAS RYAN, of Lockport, in the county of Niagaraand State of New York, haveinvented certain new and useful Improvementsin Smut-Mills; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making a to part ofthis specification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawings is a representa tion of a transverse section ofmy smut-mill, and Fig. 2 is a longitudinal sectional view of the same.

The nature of this invention relates to an improvement on Patent No.167,788, of September 14, 1875, for a smut-mill.

The object of such patent was to produce an accurate and even adjustmentof the brushes to or from the inside of the scouringcase, therebyadapting the device to be used in cleaning different varieties of grain.

In such patent a screw-threaded rod, independent of the central shaft,passedthrough projecting portions of two spiders, the adj ustment ofwhich by the rotation of the right and left hand screw-threaded rodeffected the adjustment of the brushes through the me- 0 dium of slidesand coiniecting-rods; also, a

collar was employed upon the main shaft and connected with the rodaforesaid for the purpose of holding the rod against endwisedisplacement.

In the present invention the improvement consists in substituting forsaid rod and col? lar a right and left hand screw-threaded sleevearranged to be rotated upon the main shaft by suitable gearing andadapted to'ac- 4o tuate the spiders which cause the lateral movements ofthe slides through the medium of the connecting-rods.

In the drawings, A designates the central or main shaft; B B, the headsor spiders fixed 5 upon said shaft; 0, the slides connecting with thebrushes and working in guides D; F, the connecting-rods which connectthe slides with the two spiders G G, the endwise movement of whichcauses the actuation of thec'onneet- 5o ing-rods and slides, andconsequently the adj ustment of the brushes.

Thus far the devices resemble those found in the aforesaid patent, andhence need no further description.

Upon the central shaft, A, is arranged a loose 5 5 sleeve, H, whichextends from the hub of the spider B to the hub of the spider B. On onehalf of the length is formed an external righthand screw-thread, and onthe remaining half of said sleeve is formed an external left-hand 6oscre thread, said threads fitting the corre' sponding female threads inthe movable spiders G G, in order to draw them closertogether, or tomove them farther apart, according to the direction in which the sleeveis rotated, thus moving the brushes to or from the shaft.

The rotation of the sleeve is accomplished by means of ashort rod, 1),having its bearing in'the bottom spider, B, and being provided on itsupper end with a pinion, l, which engages a gear, K, upon the sleeve.

WVh-at I claim, and desire to secure by Letters Patent, is

1. In a smut-mill in which the brushes are moved toward and away fromthe central shaft by means of spiders arranged to move parallel with theaxis of the shaft and connected by suitable operative devices with thebrushes, a right and left hand screw-threaded sleeve arranged looselyupon the central shaft, and adapted, by its rotations, to move thespiders in order to adjust the brushes, sub stantially in the mannerherein set forth.

2. In a smut-mill, the combination of the central shaft, A, with theslides J, the brushes, 8:, the connecting-rods connecting the slideswith ,the movable spiders G, the right and left hand screw threadedsleeve H, arranged loosely upon the central shaft, a gear-wheel secured7 .upon the sleeve, and a pinion secured upon a rotary rod, I), andarranged to intermesh with the gear upon the sleeve, substantially asherein shown and set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence 5 of two witnesses.

THOMAS RYAN.

Witnesses:

JOHN MCLEAN, FRED J. McGILL.

